Blood processing apparatus and method for detoxifying bacterial lipopolysaccharide

    公开(公告)号:US10881781B1

    公开(公告)日:2021-01-05

    申请号:US16862378

    申请日:2020-04-29

    发明人: Donald S. Orth

    摘要: A detoxification method includes the steps of inducing flow of patient blood through an extracorporeal device inlet and outlet in fluid connection to the circulatory system of a patient. Biological agents including lipopolysaccharide (LPS) contained within patient blood can be detoxified by passing patient blood over a biochemical reactor surface having attached or immobilized Saccharomyces boulardii alkaline phosphatase enzyme, with the biochemical reactor being contained within the extracorporeal device.

    ENGINEERED DECARBOXYLASE POLYPEPTIDES AND THEIR APPLICATION IN PREPARING BETA-ALANINE

    公开(公告)号:US20200248163A1

    公开(公告)日:2020-08-06

    申请号:US16648919

    申请日:2018-09-28

    IPC分类号: C12N9/88 C12N11/00 C12P13/06

    摘要: The present invention provides amino acid sequences of engineered decarboxylase polypeptides that are useful for catalyzing the decarboxylation of L-aspartate to produce β-alanine, and the preparation process of engineered decarboxylase polypeptides as well as reaction process under industrial-relevant conditions. The present disclosure also provides polynucleotide sequences encoding engineered decarboxylase polypeptides, engineered host cells capable of expressing engineered decarboxylase polypeptides, and methods of producing β-alanine using the engineered cells. Compared to the wild-type decarboxylase, the engineered decarboxylase polypeptide provided by the invention has better activity and stability, and overcomes the inhibition by L-aspartic acid and/or β-alanine. The use of the engineered polypeptides of the present invention for the preparation of β-alanine results in higher unit activity, lower cost, and has good industrial application prospects.